Dr Clockwork Wartenberg Wheel. No one who appreciates toys should be without a Wartenberg Pinwheel! Sometimes referred to as a neurological pinwheel, neuro wheel or simply a pinwheel. Sensations from this handy toy range from a scintillatingly sensual prickle to a wickedly sharp pin pricks, depending on how much pressure is applied. Made of High Quality Stainless Steel, these pinwheels, which measure approximately 7 Inches long, possess grooved handles and a rolling head of extremely sharp points. Each comes in a vinyl case.